Hosted by gatnerd
This is intended for people interested in the subject of military guns and their ammunition, with emphasis on automatic weapons.
Latest 27-Jan by gatnerd
Latest 27-Jan by gatnerd
Latest 27-Jan by stancrist
Latest 27-Jan by Farmplinker
Latest 27-Jan by graylion
Latest 27-Jan by Mr. T (MrT4)
Latest 27-Jan by Mr. T (MrT4)
Latest 26-Jan by gatnerd
Latest 26-Jan by graylion
Latest 26-Jan by graylion
Latest 26-Jan by autogun
Latest 26-Jan by smg762
Latest 25-Jan by schnuersi
Latest 24-Jan by ZailC
Latest 24-Jan by stancrist
Latest 24-Jan by renatohm
Latest 23-Jan by Apsyda
Latest 23-Jan by BruhMomento
Latest 22-Jan by schnuersi
Latest 21-Jan by graylion
Latest 21-Jan by Farmplinker
Latest 20-Jan by Mr. T (MrT4)
Latest 18-Jan by nincomp
Latest 17-Jan by gatnerd
Latest 15-Jan by gatnerd
Latest 14-Jan by roguetechie
Latest 14-Jan by Refleks
Latest 13-Jan by EmericD
Latest 12-Jan by APFSDST
Latest 12-Jan by APFSDST
Latest 11-Jan by RovingPedant
Latest 8-Jan by wiggy556
Latest 7-Jan by roguetechie
Latest 6-Jan by roguetechie
Latest 6-Jan by autogun
Latest 5-Jan by autogun
Latest 3-Jan by stancrist
Latest 3-Jan by Mr. T (MrT4)
Latest 30-Dec by Refleks
24/3/21
roguetechie said:Yeah for what you're doing it should be fine. The solution space you're working in is going to be brute force over absolute aerodynamic refinement anyway and what you've got there is substantially better shaped than most other pdw rounds by quite a bit.
BC is atrocious though because of the low density
24/3/21
graylion said:BC is atrocious though because of the low density
You don't need a PDW you can just use a assault rifle like the AK-74u with a thigh holster.
30/3/21
The calculator on that website massively miscalculates Meplats. Can't use it. It miscalculates another parameter as well, but I can't remember at the moment. It will make you think pointy bullets are great when the optimum low drag Meplat range is 0.08 - 0.12 like someone said earlier.
Years ago I asked people to stop using that drag calculator due to its issues.
30/3/21
Good to know, thanks. Not sure how relevant that is for this design due to short range and brute force approach. Also pointy being useful here because armour penetration.
31/3/21
The original 5.7 round was supposedly able to penetrate a NATO standard helmet at 80m and be pretty much nothing more than a bruise at 150mm.
The concept was to give the REMFs a weapon with lots of rounds in it that they could spray in relative safety because they weren't going to have to worry about killing their own side with wild fire.
So deadly when the bad guys over ran your rear echelons and got in close, but harmless at quite a short distance if said REMFs panicked and blasted fire all over the place.
24/5/21
So now the 5 and 7'' barrel .300BLK guns are all the rage or what it seems French are looking for some.
They are looking for 5'' and 7'' barrel options in .300BLK for Police and Gendarmerie
suppressor ,6 mags , M-lock interface on the forend
300K rounds of supersonic and 600k rounds of subsonic ammo
Modular construction enabling toolless conversion to 5.56mm
24/5/21
My impression is that the current crop of SBR (in the same caliber as the 'main' rifle), mated with modern ammunitions / suppressors / sights, are good enough for the PDW role.
For police spec ops, a suppressed 300 BLK 5" bbl is probably the most versatile configuration, with good enough accuracy and punch for <50 m, unless bad guys start using body armor en masse.
31/3/22
Ian just posted a new video. The segment at 1:01-1:26 ( https://youtu.be/5Jx9DsbMqew?t=60 ) is interesting because it appears to imply that the Ukraine invasion validates the PDW concept.
However, in all of the Ukraine vids and pics I've looked at, I have not seen any use of personal defense weapons like the H&K MP7, B&T MP9, or similar. Has anyone else?
31/3/22
I’ve seen a number of Krinkovs (SBR class PDW) but none of the holsterable PDWs.
I do think the ATGM/RPG strategy does validate either the PDW or ‘light carbine’ concept.
Namely, if your primary infantry roll is carrying and firing 14-50lb AT/ATGM/HE weapons, then you really want a light and compact firearm mostly for defense or close quarters ambush mopping up.
Something like Ian’s WWSD ultra light AR, as a 4.5lb carbine with 12.5” barrel and 7oz TA33 or Aimpoint T2 would be a compelling ATGM pairing.